由于城市的发展，房屋建筑、混凝土路面等非渗透面积不断扩大，造成城市雨水径流的峰值流量及径流总量增加，汇流时间缩短，给城市排涝带来很大压力。据日本《下水道协会杂志》（第１０卷第３１２期，１９９０年）报道，为了对雨水径流进行控制，日本自１９８３年开始研究... Due to the development of the city, the non-permeability areas such as house construction and concrete pavement are continuously expanding, resulting in an increase in the peak flow and total runoff of urban stormwater runoff, shortening the confluence time, and exerting great pressure on urban drainage. According to the report of Japan’s “Sewer Association” (Vol. 10, No. 312, 1990), in order to control the flow of rainwater, Japan began to study in 1983...